system.cc revision 7723
12689Sktlim@umich.edu/* 22689Sktlim@umich.edu * Copyright (c) 2003-2006 The Regents of The University of Michigan 32689Sktlim@umich.edu * All rights reserved. 42689Sktlim@umich.edu * 52689Sktlim@umich.edu * Redistribution and use in source and binary forms, with or without 62689Sktlim@umich.edu * modification, are permitted provided that the following conditions are 72689Sktlim@umich.edu * met: redistributions of source code must retain the above copyright 82689Sktlim@umich.edu * notice, this list of conditions and the following disclaimer; 92689Sktlim@umich.edu * redistributions in binary form must reproduce the above copyright 102689Sktlim@umich.edu * notice, this list of conditions and the following disclaimer in the 112689Sktlim@umich.edu * documentation and/or other materials provided with the distribution; 122689Sktlim@umich.edu * neither the name of the copyright holders nor the names of its 132689Sktlim@umich.edu * contributors may be used to endorse or promote products derived from 142689Sktlim@umich.edu * this software without specific prior written permission. 152689Sktlim@umich.edu * 162689Sktlim@umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172689Sktlim@umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182689Sktlim@umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192689Sktlim@umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202689Sktlim@umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212689Sktlim@umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222689Sktlim@umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232689Sktlim@umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242689Sktlim@umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252689Sktlim@umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262689Sktlim@umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272689Sktlim@umich.edu * 282689Sktlim@umich.edu * Authors: Steve Reinhardt 292689Sktlim@umich.edu * Lisa Hsu 302689Sktlim@umich.edu * Nathan Binkert 312689Sktlim@umich.edu * Ali Saidi 322689Sktlim@umich.edu */ 332689Sktlim@umich.edu 342521SN/A#include "arch/isa_traits.hh" 353960Sgblack@eecs.umich.edu#include "arch/remote_gdb.hh" 364194Ssaidi@eecs.umich.edu#include "arch/utility.hh" 371070SN/A#include "base/loader/object_file.hh" 381070SN/A#include "base/loader/symtab.hh" 392521SN/A#include "base/trace.hh" 402680Sktlim@umich.edu#include "cpu/thread_context.hh" 416658Snate@binkert.org#include "config/full_system.hh" 426658Snate@binkert.org#include "config/the_isa.hh" 432521SN/A#include "mem/mem_object.hh" 442522SN/A#include "mem/physical.hh" 452037SN/A#include "sim/byteswap.hh" 4656SN/A#include "sim/system.hh" 475512SMichael.Adler@intel.com#include "sim/debug.hh" 486658Snate@binkert.org 492378SN/A#if FULL_SYSTEM 502521SN/A#include "arch/vtophys.hh" 512378SN/A#include "kern/kernel_stats.hh" 527723SAli.Saidi@ARM.com#include "mem/vport.hh" 534762Snate@binkert.org#else 544762Snate@binkert.org#include "params/System.hh" 552378SN/A#endif 562SN/A 572SN/Ausing namespace std; 582107SN/Ausing namespace TheISA; 592SN/A 602SN/Avector<System *> System::systemList; 612SN/A 622SN/Aint System::numSystemsRunning = 0; 632SN/A 641070SN/ASystem::System(Params *p) 655714Shsul@eecs.umich.edu : SimObject(p), physmem(p->physmem), _numContexts(0), 662378SN/A#if FULL_SYSTEM 672521SN/A init_param(p->init_param), 687580SAli.Saidi@arm.com loadAddrMask(p->load_addr_mask), 692378SN/A#else 702378SN/A page_ptr(0), 714997Sgblack@eecs.umich.edu next_PID(0), 722378SN/A#endif 732902Ssaidi@eecs.umich.edu memoryMode(p->mem_mode), _params(p) 742SN/A{ 751070SN/A // add self to global system list 761070SN/A systemList.push_back(this); 771070SN/A 782378SN/A#if FULL_SYSTEM 791070SN/A kernelSymtab = new SymbolTable; 804838Ssaidi@eecs.umich.edu if (!debugSymbolTable) 814838Ssaidi@eecs.umich.edu debugSymbolTable = new SymbolTable; 821070SN/A 832520SN/A 842520SN/A /** 852520SN/A * Get a functional port to memory 862520SN/A */ 872520SN/A Port *mem_port; 887723SAli.Saidi@ARM.com functionalPort = new FunctionalPort(name() + "-fport"); 892520SN/A mem_port = physmem->getPort("functional"); 907723SAli.Saidi@ARM.com functionalPort->setPeer(mem_port); 917723SAli.Saidi@ARM.com mem_port->setPeer(functionalPort); 922520SN/A 937723SAli.Saidi@ARM.com virtPort = new VirtualPort(name() + "-fport"); 942521SN/A mem_port = physmem->getPort("functional"); 957723SAli.Saidi@ARM.com virtPort->setPeer(mem_port); 967723SAli.Saidi@ARM.com mem_port->setPeer(virtPort); 972521SN/A 982520SN/A 991070SN/A /** 1002158SN/A * Load the kernel code into memory 1011070SN/A */ 1024762Snate@binkert.org if (params()->kernel == "") { 1035823Ssaidi@eecs.umich.edu inform("No kernel set for full system simulation. Assuming you know what" 1043812Ssaidi@eecs.umich.edu " you're doing...\n"); 1053812Ssaidi@eecs.umich.edu } else { 1063812Ssaidi@eecs.umich.edu // Load kernel code 1074762Snate@binkert.org kernel = createObjectFile(params()->kernel); 1085823Ssaidi@eecs.umich.edu inform("kernel located at: %s", params()->kernel); 1095222Sksewell@umich.edu 1103812Ssaidi@eecs.umich.edu if (kernel == NULL) 1114762Snate@binkert.org fatal("Could not load kernel file %s", params()->kernel); 1121070SN/A 1133812Ssaidi@eecs.umich.edu // Load program sections into memory 1147723SAli.Saidi@ARM.com kernel->loadSections(functionalPort, loadAddrMask); 1151070SN/A 1163812Ssaidi@eecs.umich.edu // setup entry points 1173812Ssaidi@eecs.umich.edu kernelStart = kernel->textBase(); 1183812Ssaidi@eecs.umich.edu kernelEnd = kernel->bssBase() + kernel->bssSize(); 1193812Ssaidi@eecs.umich.edu kernelEntry = kernel->entryPoint(); 1201070SN/A 1213812Ssaidi@eecs.umich.edu // load symbols 1223812Ssaidi@eecs.umich.edu if (!kernel->loadGlobalSymbols(kernelSymtab)) 1235823Ssaidi@eecs.umich.edu fatal("could not load kernel symbols\n"); 1241070SN/A 1253812Ssaidi@eecs.umich.edu if (!kernel->loadLocalSymbols(kernelSymtab)) 1265823Ssaidi@eecs.umich.edu fatal("could not load kernel local symbols\n"); 1271070SN/A 1283812Ssaidi@eecs.umich.edu if (!kernel->loadGlobalSymbols(debugSymbolTable)) 1295823Ssaidi@eecs.umich.edu fatal("could not load kernel symbols\n"); 1301074SN/A 1313812Ssaidi@eecs.umich.edu if (!kernel->loadLocalSymbols(debugSymbolTable)) 1325823Ssaidi@eecs.umich.edu fatal("could not load kernel local symbols\n"); 1331074SN/A 1343812Ssaidi@eecs.umich.edu DPRINTF(Loader, "Kernel start = %#x\n", kernelStart); 1353812Ssaidi@eecs.umich.edu DPRINTF(Loader, "Kernel end = %#x\n", kernelEnd); 1363812Ssaidi@eecs.umich.edu DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry); 1373812Ssaidi@eecs.umich.edu DPRINTF(Loader, "Kernel loaded...\n"); 1383812Ssaidi@eecs.umich.edu } 1392378SN/A#endif // FULL_SYSTEM 1402378SN/A 1411070SN/A // increment the number of running systms 142878SN/A numSystemsRunning++; 1432SN/A} 1442SN/A 1452SN/ASystem::~System() 1462SN/A{ 1472378SN/A#if FULL_SYSTEM 1481070SN/A delete kernelSymtab; 1491070SN/A delete kernel; 1502378SN/A#else 1512378SN/A panic("System::fixFuncEventAddr needs to be rewritten " 1522378SN/A "to work with syscall emulation"); 1532378SN/A#endif // FULL_SYSTEM} 1542SN/A} 1552SN/A 1562901Ssaidi@eecs.umich.eduvoid 1574762Snate@binkert.orgSystem::setMemoryMode(Enums::MemoryMode mode) 1582901Ssaidi@eecs.umich.edu{ 1592901Ssaidi@eecs.umich.edu assert(getState() == Drained); 1602901Ssaidi@eecs.umich.edu memoryMode = mode; 1612901Ssaidi@eecs.umich.edu} 1622901Ssaidi@eecs.umich.edu 1633960Sgblack@eecs.umich.edubool System::breakpoint() 1643960Sgblack@eecs.umich.edu{ 1654095Sbinkertn@umich.edu if (remoteGDB.size()) 1664095Sbinkertn@umich.edu return remoteGDB[0]->breakpoint(); 1674095Sbinkertn@umich.edu return false; 1683960Sgblack@eecs.umich.edu} 1693960Sgblack@eecs.umich.edu 1707445Ssteve.reinhardt@amd.com/** 1717445Ssteve.reinhardt@amd.com * Setting rgdb_wait to a positive integer waits for a remote debugger to 1727445Ssteve.reinhardt@amd.com * connect to that context ID before continuing. This should really 1737445Ssteve.reinhardt@amd.com be a parameter on the CPU object or something... 1747445Ssteve.reinhardt@amd.com */ 1757445Ssteve.reinhardt@amd.comint rgdb_wait = -1; 1767445Ssteve.reinhardt@amd.com 177180SN/Aint 1785718Shsul@eecs.umich.eduSystem::registerThreadContext(ThreadContext *tc, int assigned) 1792SN/A{ 1805712Shsul@eecs.umich.edu int id; 1815718Shsul@eecs.umich.edu if (assigned == -1) { 1825718Shsul@eecs.umich.edu for (id = 0; id < threadContexts.size(); id++) { 1835718Shsul@eecs.umich.edu if (!threadContexts[id]) 1845718Shsul@eecs.umich.edu break; 1855718Shsul@eecs.umich.edu } 1865718Shsul@eecs.umich.edu 1875718Shsul@eecs.umich.edu if (threadContexts.size() <= id) 1885718Shsul@eecs.umich.edu threadContexts.resize(id + 1); 1895718Shsul@eecs.umich.edu } else { 1905718Shsul@eecs.umich.edu if (threadContexts.size() <= assigned) 1915718Shsul@eecs.umich.edu threadContexts.resize(assigned + 1); 1925718Shsul@eecs.umich.edu id = assigned; 1931806SN/A } 1941806SN/A 1952680Sktlim@umich.edu if (threadContexts[id]) 1965823Ssaidi@eecs.umich.edu fatal("Cannot have two CPUs with the same id (%d)\n", id); 1971806SN/A 1982680Sktlim@umich.edu threadContexts[id] = tc; 1995714Shsul@eecs.umich.edu _numContexts++; 2001070SN/A 2015512SMichael.Adler@intel.com int port = getRemoteGDBPort(); 2027445Ssteve.reinhardt@amd.com if (port) { 2034095Sbinkertn@umich.edu RemoteGDB *rgdb = new RemoteGDB(this, tc); 2045512SMichael.Adler@intel.com GDBListener *gdbl = new GDBListener(rgdb, port + id); 2054095Sbinkertn@umich.edu gdbl->listen(); 2067445Ssteve.reinhardt@amd.com 2074095Sbinkertn@umich.edu if (rgdb_wait != -1 && rgdb_wait == id) 2084095Sbinkertn@umich.edu gdbl->accept(); 2091070SN/A 2104095Sbinkertn@umich.edu if (remoteGDB.size() <= id) { 2114095Sbinkertn@umich.edu remoteGDB.resize(id + 1); 2124095Sbinkertn@umich.edu } 2134095Sbinkertn@umich.edu 2144095Sbinkertn@umich.edu remoteGDB[id] = rgdb; 2151070SN/A } 2161070SN/A 2171806SN/A return id; 218180SN/A} 21975SN/A 2206029Ssteve.reinhardt@amd.comint 2216029Ssteve.reinhardt@amd.comSystem::numRunningContexts() 2226029Ssteve.reinhardt@amd.com{ 2236029Ssteve.reinhardt@amd.com int running = 0; 2246029Ssteve.reinhardt@amd.com for (int i = 0; i < _numContexts; ++i) { 2256029Ssteve.reinhardt@amd.com if (threadContexts[i]->status() != ThreadContext::Halted) 2266029Ssteve.reinhardt@amd.com ++running; 2276029Ssteve.reinhardt@amd.com } 2286029Ssteve.reinhardt@amd.com return running; 2296029Ssteve.reinhardt@amd.com} 2306029Ssteve.reinhardt@amd.com 231180SN/Avoid 2321129SN/ASystem::startup() 2331129SN/A{ 2345713Shsul@eecs.umich.edu#if FULL_SYSTEM 2352114SN/A int i; 2362680Sktlim@umich.edu for (i = 0; i < threadContexts.size(); i++) 2374194Ssaidi@eecs.umich.edu TheISA::startupCPU(threadContexts[i], i); 2385713Shsul@eecs.umich.edu#endif 2391129SN/A} 2401129SN/A 2411129SN/Avoid 2425713Shsul@eecs.umich.eduSystem::replaceThreadContext(ThreadContext *tc, int context_id) 243180SN/A{ 2445713Shsul@eecs.umich.edu if (context_id >= threadContexts.size()) { 2452680Sktlim@umich.edu panic("replaceThreadContext: bad id, %d >= %d\n", 2465713Shsul@eecs.umich.edu context_id, threadContexts.size()); 247180SN/A } 248180SN/A 2495713Shsul@eecs.umich.edu threadContexts[context_id] = tc; 2505713Shsul@eecs.umich.edu if (context_id < remoteGDB.size()) 2515713Shsul@eecs.umich.edu remoteGDB[context_id]->replaceThreadContext(tc); 2522SN/A} 2532SN/A 2542378SN/A#if !FULL_SYSTEM 2552378SN/AAddr 2562378SN/ASystem::new_page() 2572378SN/A{ 2582378SN/A Addr return_addr = page_ptr << LogVMPageSize; 2592378SN/A ++page_ptr; 2603162Ssaidi@eecs.umich.edu if (return_addr >= physmem->size()) 2613162Ssaidi@eecs.umich.edu fatal("Out of memory, please increase size of physical memory."); 2622378SN/A return return_addr; 2632378SN/A} 2645795Ssaidi@eecs.umich.edu 2655795Ssaidi@eecs.umich.eduAddr 2665795Ssaidi@eecs.umich.eduSystem::memSize() 2675795Ssaidi@eecs.umich.edu{ 2685795Ssaidi@eecs.umich.edu return physmem->size(); 2695795Ssaidi@eecs.umich.edu} 2705795Ssaidi@eecs.umich.edu 2715795Ssaidi@eecs.umich.eduAddr 2725795Ssaidi@eecs.umich.eduSystem::freeMemSize() 2735795Ssaidi@eecs.umich.edu{ 2745795Ssaidi@eecs.umich.edu return physmem->size() - (page_ptr << LogVMPageSize); 2755795Ssaidi@eecs.umich.edu} 2765795Ssaidi@eecs.umich.edu 2772378SN/A#endif 2782378SN/A 2791070SN/Avoid 2801070SN/ASystem::serialize(ostream &os) 2811070SN/A{ 2822378SN/A#if FULL_SYSTEM 2831984SN/A kernelSymtab->serialize("kernel_symtab", os); 2845183Ssaidi@eecs.umich.edu#else // !FULL_SYSTEM 2855183Ssaidi@eecs.umich.edu SERIALIZE_SCALAR(page_ptr); 2865183Ssaidi@eecs.umich.edu#endif 2871070SN/A} 2881070SN/A 2891070SN/A 2901070SN/Avoid 2911070SN/ASystem::unserialize(Checkpoint *cp, const string §ion) 2921070SN/A{ 2932378SN/A#if FULL_SYSTEM 2941984SN/A kernelSymtab->unserialize("kernel_symtab", cp, section); 2955183Ssaidi@eecs.umich.edu#else // !FULL_SYSTEM 2965183Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(page_ptr); 2975183Ssaidi@eecs.umich.edu#endif 2981070SN/A} 2992SN/A 3002SN/Avoid 3012SN/ASystem::printSystems() 3022SN/A{ 3032SN/A vector<System *>::iterator i = systemList.begin(); 3042SN/A vector<System *>::iterator end = systemList.end(); 3052SN/A for (; i != end; ++i) { 3062SN/A System *sys = *i; 3072SN/A cerr << "System " << sys->name() << ": " << hex << sys << endl; 3082SN/A } 3092SN/A} 3102SN/A 3112SN/Avoid 3122SN/AprintSystems() 3132SN/A{ 3142SN/A System::printSystems(); 3152SN/A} 3162SN/A 3172902Ssaidi@eecs.umich.educonst char *System::MemoryModeStrings[3] = {"invalid", "atomic", 3182902Ssaidi@eecs.umich.edu "timing"}; 3192902Ssaidi@eecs.umich.edu 3204762Snate@binkert.org#if !FULL_SYSTEM 3212424SN/A 3224762Snate@binkert.orgSystem * 3234762Snate@binkert.orgSystemParams::create() 3242424SN/A{ 3255530Snate@binkert.org return new System(this); 3262424SN/A} 3272424SN/A 3282424SN/A#endif 329